Allentown police had suspected William Torres of dealing drugs in the city. But an undercover narcotics investigation yielded much more, and resulted in Torres, 21, being charged early Saturday with two counts of homicide.

Police said Torres, whose last known address was 436 Turner St., Allentown, gunned down two men at Fourth and Allen streets last month. According to court documents, Torres admitted killing the men.

Torres was driving on Turner Street Friday afternoon when he was pulled over by police and arrested. He was wearing a hooded sweartshirt with a skull-head pattern on it, pajama bottoms and fuzzy lion-faced slippers at the time. He was still wearing the get-up when he was arraigned after midnight at Lehigh County prison.

He is being held without bail on the homicide charges and two charges of conspiracy to commit homicide.

In a separate matter, he was charged Saturday with two counts of possession of a controlled substance, two counts of possession with intent to deliver and conspiracy.

Police said the drug charges stem from an undercover investigation in which police made controlled buys at 615 Gordon St. and kept the house under surveillance. Four people, including Torres, were selling cocaine and heroin out of the home, according to court documents.

Police have not said how they came to suspect Torres in the shooting deaths of Carlos Collazo, 32, and Jorge Camacho, 36, both of Allentown. But in an affidavit filed in court, police said Torres told them that he and another man had been looking for Collazo and Camacho, and that Torres admitted to killing both. The other man has not been charged in the homicides.

Camacho, who was a mechanic, and Collazo, were found in the 500 block of N. Fourth St. on Dec. 12. Residents reported hearing four or five shots and seeing a car speeding away at about 7:50 p.m. Police at the time said they were looking for a dark-colored vehicle and two men.